Heavy tools - no production

I made a research, but i cannot find anything about.
I’m not able to make heavy tools, even if i have a production ratio set to 10 and other products are just 1.
They never made an heavy tools, and i have an heavy tool in working my blacksmith

Is it possible that you never have enough iron ingots for them to create heavy tools? In that case, they will try to find something else to create instead, causing you to constantly be building other things.

That could be possible. i’ll check out.

got to set them to 0 when you’re low on resources so they’ll keep stocking until they can make one

thanks, the problem was that. so i set to 0 other stuff and waited